Email Open Rate Calculator — Measure Email Performance
Free email open rate calculator. Calculate your email campaign open rate to improve engagement.
Formula: (Emails Opened / Emails Delivered) × 100
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What Is This Calculator?
Email open rate measures the percentage of recipients who opened your email. It is a key metric for evaluating subject line effectiveness and audience engagement. Average open rates vary by industry, typically ranging from 15% to 25%.
How to Calculate
To calculate email open rate: 1) Find the number of unique email opens. 2) Find the number of emails successfully delivered (sent minus bounces). 3) Divide opens by delivered. 4) Multiply by 100. Formula: Open Rate = (Opened / Delivered) × 100.
Examples
Example: You send 1,000 emails, 50 bounce, and 250 are opened. Open Rate = 250 / 950 × 100 = 26.3%. That is above the industry average.
Recommended Tools
Email platforms like Mailchimp and ConvertKit track open rates automatically and provide A/B testing for subject lines.
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